Outside the concrete jungle of São Paulo, Brazil is a solar-powered holiday retreat that fully embraces nature. Brazilian architecture firm Studio MK27 designed the striking home, called the Planar House, for a couple and their three children. Despite the rather spacious size of 10,763 square feet, the dwelling projects lightness thanks to its concrete slab green roof that appears to float above the landscape. Topped with a grassy green roof, the Planar House was crafted to blend in with the surrounding lawn and rolling hills.